Air suspension fan cooling structure and fan system

Abstract

The utility model provides an air suspension fan cooling structure and a fan system, and belongs to the technical field of fan heat dissipation, the air suspension fan cooling structure comprises an air cooling pipeline, a water cooling pipeline and an intercooler; the air cooling pipeline is communicated with a volute chamber and a motor chamber of the fan body, and an intercooler is arranged on the air cooling pipeline; the water cooling pipeline comprises a liquid cooling circulation pipeline used for cooling the motor shell and an intercooling circulation pipeline used for cooling the intercooler, the intercooling circulation pipeline is communicated with the cold source and the intercooler, and low-temperature liquid in the intercooling circulation pipeline enters the intercooler to exchange heat with high-temperature gas in the intercooler so as to reduce the temperature of the gas entering the motor cavity. According to the cooling structure of the air suspension fan, water cooling and air cooling are combined, the intercooler is additionally arranged on the outer side of the fan body, and air needing to enter the motor cavity is cooled through cooling liquid of the intercooler, so that the temperature of the air entering the motor cavity is reduced, and the heat dissipation effect of the fan is improved.

Description

Technical Field

[0001] This utility model belongs to the field of fan heat dissipation technology, and more specifically, it relates to an air suspension fan cooling structure and fan system. Background Technology

[0002] Air-bearing centrifugal fans commonly use high-speed permanent magnet motors to drive the compressor. Because high-speed permanent magnet motors are much smaller than conventional motors of the same power, their power and loss densities are high, and heat dissipation is difficult. Without rapid heat dissipation measures, the motor temperature will rise excessively, leading to a shortened winding life. As a core component of the fan, the reliability of the high-speed permanent magnet motor directly affects the overall performance and lifespan of the fan. To ensure efficient and stable operation of the high-speed permanent magnet motor, a dedicated cooling structure is required internally. Currently, the main cooling methods for high-speed permanent magnet motors include water cooling, air cooling, and a combination of both.

[0003] Air cooling primarily targets the internal cavity and shaft of the motor. It works by drawing air from the casing into the motor chamber to dissipate heat from the motor components. However, because the fan generates pressure during operation, it also raises the air temperature. Consequently, the cooling air from the fan has already generated some heat before entering the motor chamber, thus reducing the cooling effect on the motor components. Utility Model Content

[0004] The purpose of this invention is to provide an air suspension fan cooling structure and fan system, which aims to improve the heat dissipation effect of the fan.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An air-suspended fan cooling structure and fan system are provided, including an air-cooled pipeline, a water-cooled pipeline, and an intercooler; the air-cooled pipeline connects the volute chamber of the fan body and the motor chamber, and the intercooler is located on the air-cooled pipeline; the water-cooled pipeline includes a liquid-cooled circulation pipeline for cooling the motor housing and an intercooled circulation pipeline for cooling the intercooler, the intercooled circulation pipeline connects a cold source and the intercooler, and the low-temperature liquid in the intercooled circulation pipeline enters the intercooler to exchange heat with the high-temperature gas inside the intercooler, thereby reducing the temperature of the gas entering the motor chamber.

[0006] As another embodiment of this application, the outlet end of the volute has a variable diameter pipe section, the inner diameter of which gradually increases along the airflow direction, and the inlet end of the air-cooled pipeline is connected to the inner cavity of the variable diameter pipe section.

[0007] In another embodiment of this application, a ventilation hole is provided on the motor housing, and the ventilation hole is connected to the motor chamber; the outlet end of the air-cooled pipe is connected to the ventilation hole.

[0008] In another embodiment of this application, the air-cooled pipeline includes an air inlet pipe section and an air outlet pipe section. The air inlet pipe section connects the variable diameter pipe section and the intercooler, and the air outlet pipe section connects the intercooler and the ventilation hole.

[0009] In another embodiment of this application, the air-cooled pipeline further includes an exhaust port, which is connected to an exhaust pipe.

[0010] In another embodiment of this application, the liquid cooling circulation pipeline includes a supply pipe and a return pipe. The supply pipe connects the outlet of the cold source and the inlet of the motor housing, and the return pipe connects the outlet of the motor housing and the inlet of the cold source.

[0011] In another embodiment of this application, the intercooling circulation pipeline includes a first pipe section and a second pipe section, wherein the first pipe section is connected to the liquid supply pipe and the second pipe section is connected to the liquid return pipe.

[0012] The beneficial effects of the air suspension fan cooling structure provided by this utility model are as follows: Compared with the prior art, the air suspension fan cooling structure of this utility model combines water cooling and air cooling. By adding an intercooler on the outside of the fan body, the coolant in the intercooler cools the air that needs to enter the motor chamber, thereby reducing the temperature of the air entering the motor chamber, improving the heat dissipation effect of the fan, and improving the reliability of the fan.

[0013] A fan system is also provided, which adopts the above-mentioned air suspension fan cooling structure and includes a fan outer frame and a partition. The partition is placed horizontally and divides the space of the fan outer frame into an upper chamber and a lower chamber. The fan body is located in the upper chamber and the intercooler is located in the lower chamber.

[0014] In another embodiment of this application, the partition plate has a plurality of through holes, which allow the air-cooled pipe and the liquid-cooled circulation pipe to pass through. The corresponding air-cooled pipe and the liquid-cooled circulation pipe each have a waterproof joint, which is used to seal the through holes.

[0015] As another embodiment of this application, the air-cooled pipeline includes an exhaust pipe that connects to the motor chamber, and the outlet end of the exhaust pipe extends to the air inlet of the lower chamber or the fan body.

[0016] The beneficial effects of the fan system provided by this utility model are as follows: Compared with the prior art, the fan system of this utility model adopts the above-mentioned air suspension fan cooling structure and has all the beneficial effects of the above-mentioned cooling mechanism; and the fan system uses a partition to divide the fan outer frame into an upper chamber and a lower chamber to install the fan body and the intercooler respectively, so as to avoid the intercooler, air-cooled pipes and water-cooled pipes from affecting the fan body, thereby improving the reliability of the fan operation and the ease of installation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the air suspension fan cooling structure and fan system provided in the embodiments of this utility model.

[0019] In the diagram: 1. Motor housing; 2. Volute; 3. Variable diameter pipe section; 4. Air inlet pipe section; 5. Intercooler; 6. Air supply pipe section; 7. Liquid supply pipe; 8. Liquid return pipe; 9. First pipe section; 10. Second pipe section. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] Please see Figure 1 The cooling structure and fan system of the air-suspended fan provided by this utility model will now be described. The cooling structure of the air-suspended fan includes an air-cooled pipe, a water-cooled pipe, and an intercooler 5; the air-cooled pipe connects the volute chamber of the fan body and the motor chamber, and the air-cooled pipe has an intercooler 5; the water-cooled pipe includes a liquid-cooled circulation pipe for cooling the motor housing 1 and an intercooled circulation pipe for cooling the intercooler 5, the intercooled circulation pipe connects the cold source and the intercooler 5, and the low-temperature liquid in the intercooled circulation pipe enters the intercooler 5 to exchange heat with the high-temperature gas in the intercooler 5, so as to reduce the temperature of the gas entering the motor chamber.

[0022] The air-suspended fan uses a combination of air cooling and water cooling to cool the motor housing 1 and motor chamber within the fan body. Air cooling is used to deliver air to the motor chamber and cool the motor chamber and its internal shaft structure. An intercooler 5 is added to the air cooling system to cool the exhaust gas from the fan before delivering the low-temperature gas to the motor chamber for further cooling. The coolant in the water cooling system is divided into two parts: one part enters the motor housing 1 directly through the liquid cooling circulation pipe to cool the motor housing 1; the other part enters the intercooler 5 through the intercooler circulation pipe to cool the high-temperature air passing through the intercooler 5 in the air cooling system.

[0023] The air suspension fan cooling structure provided by this utility model combines water cooling and air cooling with existing technology. By adding an intercooler 5 to the outside of the fan body, the coolant in the intercooler 5 cools the air that needs to enter the motor chamber, thereby reducing the temperature of the air entering the motor chamber, improving the heat dissipation effect of the fan, and improving the reliability of the fan.

[0024] In some possible embodiments, please refer to Figure 1 The outlet end of the volute 2 has a variable diameter pipe section 3, the inner diameter of which gradually increases along the airflow direction, and the inlet end of the air-cooled pipe is connected to the inner cavity of the variable diameter pipe section 3.

[0025] The air-cooled pipe connects the outlet end of the volute 2 and the motor chamber. Since the gas at the outlet end of the volute 2 is high-pressure gas, there is no need to add a power drive structure to the air-cooled pipe. The gas can be passed through the air-cooled pipe and enter the motor chamber by the gas pressure at the outlet of the volute 2.

[0026] Specifically, the outlet end of the volute 2 is connected to a reducing pipe section 3, the inner diameter of which gradually increases from the end closer to the volute 2 toward the end farther away from the volute 2. The inlet end of the air-cooled pipeline is connected to the side of the reducing pipe section 3, so that when the high-pressure air discharged from the outlet end of the volute 2 passes through the reducing pipe section 3, a portion of the high-pressure air is separated and enters the air-cooled pipeline, while the remaining high-pressure air is discharged from the outlet end of the reducing pipe section 3.

[0027] In some possible embodiments, please refer to Figure 1 The motor housing 1 has ventilation holes that connect to the motor chamber; the outlet end of the air-cooled pipe is connected to the ventilation holes.

[0028] A ventilation hole is located on the side wall of the motor housing 1, near the end of the volute 2. The ventilation hole connects to the motor chamber near the end of the volute 2. High-pressure air in the air-cooled piping is cooled by the intercooler 5, becoming low-temperature, high-pressure air. This low-temperature, high-pressure air enters the motor chamber through the ventilation hole, cooling the shaft structure within the motor chamber.

[0029] The aforementioned air-cooled piping system includes an inlet duct section 4 and an outlet duct section 6. The inlet duct section 4 connects to the reducer section 3 and the intercooler 5, while the outlet duct section 6 connects to the intercooler 5 and the ventilation opening. The inlet duct section 4 and the outlet duct section 6 are located upstream and downstream of the intercooler 5, respectively. The inlet duct section 4 contains high-temperature, high-pressure air, while the outlet duct section 6 contains low-temperature, high-pressure air.

[0030] In addition, the air-cooled piping also includes an exhaust vent, which is connected to an exhaust pipe. Optionally, the exhaust vent is located on the side wall of the motor housing 1 at the end away from the volute 2.

[0031] In some possible embodiments, please refer to Figure 1 The liquid cooling circulation pipeline includes a liquid supply pipe 7 and a liquid return pipe 8. The liquid supply pipe 7 connects the outlet of the cold source and the liquid inlet of the motor housing 1, and the liquid return pipe 8 connects the liquid outlet of the motor housing 1 and the inlet of the cold source.

[0032] The cold source can be a water-cooled frequency converter, which is installed on one side of the fan body. Low-temperature coolant enters the supply pipe 7 from the outlet of the cold source, and enters the motor housing 1 through the supply pipe 7 and the inlet of the motor housing 1 to cool the motor housing 1. The low-temperature coolant exchanges heat in the motor housing 1 to form high-temperature coolant. The high-temperature coolant enters the return pipe 8 from the outlet of the motor housing 1 and returns to the inlet of the cold source. The high-temperature coolant is cooled in the cold source.

[0033] In one embodiment, the structure of the intercooling circulation pipeline is identical to that of the liquid cooling circulation pipeline, forming a circulation path between the cold source and the intercooler 5. Two cold sources can be provided in the system. The intercooling circulation pipeline and the liquid cooling circulation pipeline are connected to different cold sources, forming two separate cooling circulation systems.

[0034] In another embodiment, the intercooling circulation pipeline includes a first pipe section 9 and a second pipe section 10. The first pipe section 9 is connected to the liquid supply pipe 7, and the second pipe section 10 is connected to the liquid return pipe 8. A tee structure is formed at the connection between the first pipe section 9 and the liquid supply pipe 7, and a tee structure is also formed at the connection between the second pipe section 10 and the liquid return pipe 8. The intercooling circulation pipeline and the liquid cooling circulation pipeline share the same cold source. The coolant generated by the same cold source first enters the liquid supply pipe 7, and then a portion is diverted out of the liquid supply pipe 7 by the first pipe section 9. The diverted coolant is used to enter the intercooler 5, and the remaining coolant is used to cool the motor housing 1. Then, the two portions of coolant merge in the liquid return pipe 8 and flow back to the cold source together.

[0035] like Figure 1As shown, a fan system is also provided. The fan system adopts the above-mentioned air suspension fan cooling structure and includes a fan outer frame and a partition. The partition is placed horizontally and divides the space of the fan outer frame into an upper chamber and a lower chamber. The fan body is located in the upper chamber and the intercooler 5 is located in the lower chamber.

[0036] Compared with the prior art, the fan system provided by this utility model adopts the above-mentioned air suspension fan cooling structure, which has all the beneficial effects of the above-mentioned cooling mechanism; and the fan system uses a partition to divide the outer frame of the fan into an upper chamber and a lower chamber, so as to install the fan body and the intercooler 5 respectively, avoiding the intercooler 5, air-cooled pipes and water-cooled pipes from affecting the fan body, thereby improving the reliability of the fan operation and the ease of installation.

[0037] The partition has multiple through holes that allow air-cooled pipes and liquid-cooled circulation pipes to pass through. The corresponding air-cooled pipes and liquid-cooled circulation pipes are equipped with waterproof joints to seal the through holes.

[0038] Multiple through holes are made in the partition to allow pipes to pass through. To improve sealing, a waterproof connector is fitted on the pipe and embedded in the through hole to completely seal the through hole.

[0039] The air-cooled piping includes an exhaust duct connecting to the motor chamber, with its outlet extending to the lower chamber or the air inlet of the fan body. The exhaust duct in the air-cooled piping is used to exhaust the high-temperature air from the motor chamber. The high-temperature air is discharged to the lower chamber and then from the lower chamber to the outer frame of the fan. Alternatively, the high-temperature air can be led from the exhaust duct to the air inlet of the fan body, i.e., the air inlet of the volute 2, where it is drawn back into the volute 2 and compressed again.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An air-suspended fan cooling structure, characterized in that, It includes air-cooled pipes, water-cooled pipes, and an intercooler (5); the air-cooled pipes connect the volute chamber of the fan body and the motor chamber, and the intercooler (5) is located on the air-cooled pipes; the water-cooled pipes include a liquid-cooled circulation pipe for cooling the motor housing (1) and an intercooled circulation pipe for cooling the intercooler (5), the intercooled circulation pipes connect the cold source and the intercooler (5), and the low-temperature liquid in the intercooled circulation pipes enters the intercooler (5) to exchange heat with the high-temperature gas in the intercooler (5) to reduce the temperature of the gas entering the motor chamber.

2. The air suspension fan cooling structure as described in claim 1, characterized in that, The outlet end of the volute (2) has a variable diameter pipe section (3), the inner diameter of which gradually increases along the airflow direction, and the inlet end of the air-cooled pipeline is connected to the inner cavity of the variable diameter pipe section (3).

3. The air suspension fan cooling structure as described in claim 2, characterized in that, The motor housing (1) has ventilation holes that connect to the motor chamber; the outlet end of the air-cooled pipe is connected to the ventilation holes.

4. The air suspension fan cooling structure as described in claim 3, characterized in that, The air-cooled pipeline includes an air inlet pipe section (4) and an air outlet pipe section (6). The air inlet pipe section (4) connects the variable diameter pipe section (3) and the intercooler (5). The air outlet pipe section (6) connects the intercooler (5) and the ventilation hole.

5. The air suspension fan cooling structure as described in claim 4, characterized in that, The air-cooled pipeline also includes an exhaust port, which is connected to an exhaust duct.

6. The air suspension fan cooling structure as described in claim 1, characterized in that, The liquid cooling circulation pipeline includes a supply pipe (7) and a return pipe (8). The supply pipe (7) is connected to the outlet of the cold source and the inlet of the motor housing (1). The return pipe (8) is connected to the outlet of the motor housing (1) and the inlet of the cold source.

7. The air suspension fan cooling structure as described in claim 6, characterized in that, The intercooling circulation pipeline includes a first pipe section (9) and a second pipe section (10), the first pipe section (9) being connected to the liquid supply pipe (7) and the second pipe section (10) being connected to the liquid return pipe (8).

8. A fan system, characterized in that, The air suspension fan cooling structure according to any one of claims 1-7 is adopted, and further includes a fan outer frame and a partition. The partition is placed horizontally and divides the space of the fan outer frame into an upper chamber and a lower chamber. The fan body is located in the upper chamber and the intercooler (5) is located in the lower chamber.

9. The fan system as described in claim 8, characterized in that, The partition has multiple through holes that allow the air-cooled pipes and the liquid-cooled circulation pipes to pass through. Each of the air-cooled pipes and the liquid-cooled circulation pipes has a waterproof connector for sealing the through holes.

10. The fan system as described in claim 8, characterized in that, The air-cooled piping includes an exhaust pipe that connects to the motor chamber, and the outlet end of the exhaust pipe extends to the air inlet of the lower chamber or the fan body.

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